/* SPDX-License-Identifier: MIT */
/*
* Copyright © 2022 Intel Corporation
*/
/**
* DOC : I915_PARAM_VM_BIND_VERSION
*
* VM_BIND feature version supported .
* See typedef drm_i915_getparam_t param .
*
* Specifies the VM_BIND feature version supported .
* The following versions of VM_BIND have been defined :
*
* 0 : No VM_BIND support .
*
* 1 : In VM_UNBIND calls , the UMD must specify the exact mappings created
* previously with VM_BIND , the ioctl will not support unbinding multiple
* mappings or splitting them . Similarly , VM_BIND calls will not replace
* any existing mappings .
*
* 2 : The restrictions on unbinding partial or multiple mappings is
* lifted , Similarly , binding will replace any mappings in the given range .
*
* See struct drm_i915_gem_vm_bind and struct drm_i915_gem_vm_unbind .
*/
#define I915_PARAM_VM_BIND_VERSION 57
/**
* DOC : I915_VM_CREATE_FLAGS_USE_VM_BIND
*
* Flag to opt - in for VM_BIND mode of binding during VM creation .
* See struct drm_i915_gem_vm_control flags .
*
* The older execbuf2 ioctl will not support VM_BIND mode of operation .
* For VM_BIND mode , we have new execbuf3 ioctl which will not accept any
* execlist ( See struct drm_i915_gem_execbuffer3 for more details ) .
*/
#define I915_VM_CREATE_FLAGS_USE_VM_BIND (1 << 0 )
/* VM_BIND related ioctls */
#define DRM_I915_GEM_VM_BIND 0 x3d
#define DRM_I915_GEM_VM_UNBIND 0 x3e
#define DRM_I915_GEM_EXECBUFFER3 0 x3f
#define DRM_IOCTL_I915_GEM_VM_BIND DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_GEM_VM_BIND, struct drm_i915_gem_vm_bind)
#define DRM_IOCTL_I915_GEM_VM_UNBIND DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_GEM_VM_UNBIND, struct drm_i915_gem_vm_bind)
#define DRM_IOCTL_I915_GEM_EXECBUFFER3 DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_GEM_EXECBUFFER3, struct drm_i915_gem_execbuffer3)
/**
* struct drm_i915_gem_timeline_fence - An input or output timeline fence .
*
* The operation will wait for input fence to signal .
*
* The returned output fence will be signaled after the completion of the
* operation .
*/
struct drm_i915_gem_timeline_fence {
/** @handle: User's handle for a drm_syncobj to wait on or signal. */
__u32 handle;
/**
* @ flags : Supported flags are :
*
* I915_TIMELINE_FENCE_WAIT :
* Wait for the input fence before the operation .
*
* I915_TIMELINE_FENCE_SIGNAL :
* Return operation completion fence as output .
*/
__u32 flags;
#define I915_TIMELINE_FENCE_WAIT (1 << 0 )
#define I915_TIMELINE_FENCE_SIGNAL (1 << 1 )
#define __I915_TIMELINE_FENCE_UNKNOWN_FLAGS (-(I915_TIMELINE_FENCE_SIGNAL << 1 ))
/**
* @ value : A point in the timeline .
* Value must be 0 for a binary drm_syncobj . A Value of 0 for a
* timeline drm_syncobj is invalid as it turns a drm_syncobj into a
* binary one .
*/
__u64 value;
};
/**
* struct drm_i915_gem_vm_bind - VA to object mapping to bind .
*
* This structure is passed to VM_BIND ioctl and specifies the mapping of GPU
* virtual address ( VA ) range to the section of an object that should be bound
* in the device page table of the specified address space ( VM ) .
* The VA range specified must be unique ( ie . , not currently bound ) and can
* be mapped to whole object or a section of the object ( partial binding ) .
* Multiple VA mappings can be created to the same section of the object
* ( aliasing ) .
*
* The @ start , @ offset and @ length must be 4 K page aligned . However the DG2 has
* 64 K page size for device local memory and has compact page table . On that
* platform , for binding device local - memory objects , the @ start , @ offset and
* @ length must be 64 K aligned . Also , UMDs should not mix the local memory 64 K
* page and the system memory 4 K page bindings in the same 2 M range .
*
* Error code - EINVAL will be returned if @ start , @ offset and @ length are not
* properly aligned . In version 1 ( See I915_PARAM_VM_BIND_VERSION ) , error code
* - ENOSPC will be returned if the VA range specified can ' t be reserved .
*
* VM_BIND / UNBIND ioctl calls executed on different CPU threads concurrently
* are not ordered . Furthermore , parts of the VM_BIND operation can be done
* asynchronously , if valid @ fence is specified .
*/
struct drm_i915_gem_vm_bind {
/** @vm_id: VM (address space) id to bind */
__u32 vm_id;
/** @handle: Object handle */
__u32 handle;
/** @start: Virtual Address start to bind */
__u64 start;
/** @offset: Offset in object to bind */
__u64 offset;
/** @length: Length of mapping to bind */
__u64 length;
/**
* @ flags : Supported flags are :
*
* I915_GEM_VM_BIND_CAPTURE :
* Capture this mapping in the dump upon GPU error .
*
* Note that @ fence carries its own flags .
*/
__u64 flags;
#define I915_GEM_VM_BIND_CAPTURE (1 << 0 )
/**
* @ fence : Timeline fence for bind completion signaling .
*
* Timeline fence is of format struct drm_i915_gem_timeline_fence .
*
* It is an out fence , hence using I915_TIMELINE_FENCE_WAIT flag
* is invalid , and an error will be returned .
*
* If I915_TIMELINE_FENCE_SIGNAL flag is not set , then out fence
* is not requested and binding is completed synchronously .
*/
struct drm_i915_gem_timeline_fence fence;
/**
* @ extensions : Zero - terminated chain of extensions .
*
* For future extensions . See struct i915_user_extension .
*/
__u64 extensions;
};
/**
* struct drm_i915_gem_vm_unbind - VA to object mapping to unbind .
*
* This structure is passed to VM_UNBIND ioctl and specifies the GPU virtual
* address ( VA ) range that should be unbound from the device page table of the
* specified address space ( VM ) . VM_UNBIND will force unbind the specified
* range from device page table without waiting for any GPU job to complete .
* It is UMDs responsibility to ensure the mapping is no longer in use before
* calling VM_UNBIND .
*
* If the specified mapping is not found , the ioctl will simply return without
* any error .
*
* VM_BIND / UNBIND ioctl calls executed on different CPU threads concurrently
* are not ordered . Furthermore , parts of the VM_UNBIND operation can be done
* asynchronously , if valid @ fence is specified .
*/
struct drm_i915_gem_vm_unbind {
/** @vm_id: VM (address space) id to bind */
__u32 vm_id;
/** @rsvd: Reserved, MBZ */
__u32 rsvd;
/** @start: Virtual Address start to unbind */
__u64 start;
/** @length: Length of mapping to unbind */
__u64 length;
/**
* @ flags : Currently reserved , MBZ .
*
* Note that @ fence carries its own flags .
*/
__u64 flags;
/**
* @ fence : Timeline fence for unbind completion signaling .
*
* Timeline fence is of format struct drm_i915_gem_timeline_fence .
*
* It is an out fence , hence using I915_TIMELINE_FENCE_WAIT flag
* is invalid , and an error will be returned .
*
* If I915_TIMELINE_FENCE_SIGNAL flag is not set , then out fence
* is not requested and unbinding is completed synchronously .
*/
struct drm_i915_gem_timeline_fence fence;
/**
* @ extensions : Zero - terminated chain of extensions .
*
* For future extensions . See struct i915_user_extension .
*/
__u64 extensions;
};
/**
* struct drm_i915_gem_execbuffer3 - Structure for DRM_I915_GEM_EXECBUFFER3
* ioctl .
*
* DRM_I915_GEM_EXECBUFFER3 ioctl only works in VM_BIND mode and VM_BIND mode
* only works with this ioctl for submission .
* See I915_VM_CREATE_FLAGS_USE_VM_BIND .
*/
struct drm_i915_gem_execbuffer3 {
/**
* @ ctx_id : Context id
*
* Only contexts with user engine map are allowed .
*/
__u32 ctx_id;
/**
* @ engine_idx : Engine index
*
* An index in the user engine map of the context specified by @ ctx_id .
*/
__u32 engine_idx;
/**
* @ batch_address : Batch gpu virtual address / es .
*
* For normal submission , it is the gpu virtual address of the batch
* buffer . For parallel submission , it is a pointer to an array of
* batch buffer gpu virtual addresses with array size equal to the
* number of ( parallel ) engines involved in that submission ( See
* struct i915_context_engines_parallel_submit ) .
*/
__u64 batch_address;
/** @flags: Currently reserved, MBZ */
__u64 flags;
/** @rsvd1: Reserved, MBZ */
__u32 rsvd1;
/** @fence_count: Number of fences in @timeline_fences array. */
__u32 fence_count;
/**
* @ timeline_fences : Pointer to an array of timeline fences .
*
* Timeline fences are of format struct drm_i915_gem_timeline_fence .
*/
__u64 timeline_fences;
/** @rsvd2: Reserved, MBZ */
__u64 rsvd2;
/**
* @ extensions : Zero - terminated chain of extensions .
*
* For future extensions . See struct i915_user_extension .
*/
__u64 extensions;
};
/**
* struct drm_i915_gem_create_ext_vm_private - Extension to make the object
* private to the specified VM .
*
* See struct drm_i915_gem_create_ext .
*/
struct drm_i915_gem_create_ext_vm_private {
#define I915_GEM_CREATE_EXT_VM_PRIVATE 2
/** @base: Extension link. See struct i915_user_extension. */
struct i915_user_extension base;
/** @vm_id: Id of the VM to which the object is private */
__u32 vm_id;
};
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